Abstract: The study deals with dynamic analysis of non-prestressed Rayleigh beam carrying an added mass and traversed by uniform partially distributed moving loads. The governing partial differential equations were analysed to determine the dynamical behaviour of the system under consideration. It is shown that the amplitude deflection decreases as the length of the load (E) increases for a fixed value of the moving load (ML) when a non-prestressed moving force problem WF (x, t) is considered. Also we observed that for the moving mass problem, the amplitude deflection WML (x, t) decreases as the length of the load (E) increases for various time t and a particular value of the moving load.